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Re: Problem with Solve and NSolve
*To*: mathgroup at smc.vnet.net
*Subject*: [mg122466] Re: Problem with Solve and NSolve
*From*: Heike Gramberg <heike.gramberg at gmail.com>
*Date*: Sat, 29 Oct 2011 07:11:45 -0400 (EDT)
*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com
*References*: <201110280935.FAA20759@smc.vnet.net>
Solve and NSolve are used to find closed form solutions of equations.
Since your equation because it is a transcendental equation which
doesn't have an explicit close form solution Solve returns an error. To
find numerical approximations of the solutions you can use FindRoot
instead, e.g.
FindRoot[x^3*Sin[x] == 1, {x, 1}]
output: {x -> 1.04879}
see =
http://reference.wolfram.com/mathematica/tutorial/SolvingEquations.html
for more information about solving equations in Mathematica.
Heike.
On 28 Oct 2011, at 11:35, V. Williams wrote:
> I've recently tried Mathematica 8.0.1, and I've found that it's unable
to compute Solve[x^3*Sin[x]==1,x] (and the same with NSolve), which
gives an error:
> Solve::nsmet: This system cannot be solved with the methods available to Solve
>
> WolframAlpha solves it without problems, so what's wrong with Mathematica?
>
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